Year	% of total population
1960	16.954961265749894
1961	17.427286752449668
1962	17.89807841658515
1963	18.37065740685197
1964	18.851652002793646
1965	18.781475773649333
1966	18.74145045242314
1967	18.740414616563353
1968	18.753589372498933
1969	18.775931191040208
1970	18.803902449192776
1971	18.833599025759586
1972	18.883765198636674
1973	19.01996290795616
1974	19.23259436776316
1975	19.294467745787195
1976	19.458610960426963
1977	19.626271913605343
1978	20.028597118328413
1979	20.675175736711054
1980	21.35506719073813
1981	22.063339277217462
1982	22.782064762884968
1983	23.40262041703887
1984	24.041290119829508
1985	24.69027926274525
1986	25.349696265853797
1987	26.02035094491455
1988	26.704346049975957
1989	27.40171143597205
1990	28.113345306257678
1991	28.889763281507893
1992	29.690731479408836
1993	30.504450131199068
1994	31.333497788041118
1995	32.17589579352401
1996	33.03365337949623
1997	33.90117177155594
1998	34.7812776627835
1999	35.67235670789165
2000	36.588262501089936
2001	37.617931462431535
2002	38.72692420852506
2003	39.84773795865777
2004	40.979263183004996
2005	42.114743372802764
2006	43.22566540641746
2007	44.324139618232856
2008	45.42767318930566
2009	46.53141561435698
2010	47.63524406802058
2011	48.675004825376945
2012	49.68966431736136
2013	50.69832950212375
2014	51.70433651634081
2015	52.70506808201208
2016	53.70101089211365
2017	54.68864471500722
2018	55.6518040281527
2019	56.58741042441861
2020	57.494726701029315
2021	58.373816693693186
2022	59.22612207884308
2023	60.04872149931156